Strange Characters by a strange Author

Man or beast each move the same,  some run, some walk, some crawl and some jump depending on the circumstances. These four movements have their own consequences. When you run you can hit the wall,  walk but where to?  Back and forth a person can move aimlessly, crawl but for how long?  Jump but how high? 
Then noted that we are like characters in the book with names, personality,  preferences,  and a book written by an author.  Man is the character ,  the book is the earth.  But who is this Author that writes all these stories with these strange characters in the book?